| 摘要 |
PURPOSE:To use a recording medium which is used in a prescribed picture file system in another picture file system as well in a picture file system using recording medium driving device, by preparing index information areas at every optical disk in a hard disk. CONSTITUTION:A picture storing area 31 is used for successively storing picture from the lower order to the higher order of sector addresses. A management information storage area 32 is an area in which management information related to pictures is stored and key words 42 for retrieval 42, a leading sector address 43 at which pictures are stored, picture length 44, paper size of A4, A3, etc., and the resolution 46 of pictures are shown as examples in sectors for storing index information of an ID 41. When a change or addition becomes necessary to the prescribed sector of the management information recording area 32, it becomes necessary to rewrite the index information to which the change or addition is made in another sector. An ID 51 is a substitute information sector.
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